The 25-kg box is launched from the position shown along the rough horizontal plane with the velocity of 8 m/s. Determine the distance x that the box will travel before the spring stops the forward motion. The coefficient of kinetic friction between the box and the plane is uk = 0.2, and the spring constant is k = 150 N/m. 8 m/s 25 kg 00000 8 m

The ladder and the person weigh 30 lb and 180 Ib, respectively. The center of mass of the 12-ft ladder is at its midpoint. The coefficient of static friction between the ladder and the floor is 0.50. What is the largest value of the angle ALPHA for which the person could climb to the top of the ladder without it slipping? The ladder and the person weigh 30 lb and 180 Ib, respectively. The center of mass of the 12-ft ladder is at its midpoint. The coefficient of static friction between the ladder and the floor is 0.5 and the coefficient of friction between the ladder and the wall is 0.3. What is the largest value of the angle ALPHA for which the person could climb to the top of the ladder without it slipping?

6....1

Please answer with a complete solution. Thank you! The forces acting on a 1-ft length of a dam are shown. The upward ground reaction varies uniformly from an intensity of pA (lb/ft) at A to pB (lb/ft) at B. Determine pA and pB and also the horizontal resistance to sliding H.